Firmware for K2 Keyboards

 

How to update the firmware?

WARNING: ONLY FOR Keychron K2 USERS 

Please follow the instructions correctly to flash the firmware.

  1. Download the correct firmware for your layout (K2 White Backlight/ K2 RGB Backlight ) otherwise, it can brick your keyboard.
  2. Make you have switched the keyboard to cable mode. If you flash the keyboard in the bluetooth mode, it will brick your keyboard.
  3. Make sure you have switched the system toggle correctly. ( Means you need to switch the keyboard to Windows if you are using a Windows, you need to switch the keyboard to the Mac if you are using a Mac)
  4. Make sure that your keyboard is connected to the PC/Mac through the cable that comes with the box ( if you are using a third party cable, please make sure the cable can pass data as some of the cable can only be used for charging).
  5. Make sure that you use only Keychron keyboard to connect with the PC, otherwise, it might flash the firmware of your other keyboards. If you have multiple Keychron keyboards, please flash the firmware one by one, do not plug all the keyboards to the computer all together.
  6. Now start running the exe file for Windows or the app file for the Mac. On Mac if you meet the problem of “App is damaged and can’t be opened. You should move it to the Trash. ”  Please follow the instructions under this page to fix it. 
  7. After flashing the new firmware, hold "Fn"+"Z"+"J" these three keys together for five seconds to do the factory reset. Then you are good to go.

    What's new in this firmware

    1. fn + Caps Lock + P -- Hold these three keys together for 6 seconds, the Caps Lock key will no longer follow the backlight mode, it will be used to indicate the status of capital/ small letters. This feature was included in the last firmware, but with bugs, this time we have fixed the bug for this feature.
    2. fn + L + light effect key (the light bulb key) -- Hold these three keys together for 6 seconds, it will lock the light effect you are using now. To unlock the light effect, press these three keys together for 6 seconds again. Please make sure to hold the fn and L key first then hold the light effect key.
    3. Under the no backlight circumstances, if you press the light effect key, the backlight will be turned on. (We add this because there are too many users send questions to us saying "my backlight is not working." "my keyboard's backlight has dead '', but the reason for it is they accidentally turned off the backlight and forgot to turn it back.
    4. fn + I + D -- By default,  short press del to get del, press fn + del to get insert;   Hold these three keys together for 6 seconds, the function of the del key will be reversed to insert. Then the short press the key to get insert, press fn key combination will get the del function. Hold these three keys together for 6 seconds again to change back to the default.
    Download the Firmware from the following link:
    K2 White Backlight V1.6
    K2 RGB Backlight V1.6

    If you meet the problem of “App is damaged and can’t be opened. You should move it to the Trash. ”  Here is the instruction below to fix it. 

    1.Download the GateKeeper_Helper.(you can refer to this link and download it.) Completed download and open it. Then open the “GateKeeper_Helper”.

    2.You will see five options and ask you enter your choice, now you type 3 and enter, it will show you that “Drag & Drop The App Here Then Hit Return: “, please drop the firmware to the GateKeeper and hit Return and then input your password and click enter, now you will see the [Process completed], done!

    Finally, please try to open our firmware again and you should be able to process the firmware update now, thank you.

     

    Below are the old firmwares from the past

     

    Firmware V1.37

    RGB Backlight Version & White Backlight Version:
    1. Under all the system, press Fn+I+D for 3 seconds, the red indicator LED light will flash 3 times, and reverse the function of DEL and Insert. It will perform as DEL key by default and then change to Insert after pressing the shortcut key. Vice versa. And we also add the composite key for Fn+DEL. When pressing the Fn+DEL, DEL will perform as the Insert key and when DEL performs as Insert, pressing the Fn+Insert it will perform as DEL.
    2. Press Fn+caps lock+p for 3 seconds, the caps lock key will no longer follow the backlight mode, it will be used to indicate the status of capital/ small letters.
    3. It fixed the issue that under low power mode, the backlight will automatically enter the sleeping mode in one minute. Now it will follow the backlight mode until it runs out of battery.
    Extra for White Backlight Version:
    Add battery level showcase. Pressing Fn+B, if the power is above 70%, the backlight of the whole keyboard will on; when it is 70%~30 %, backlight the first row will be off; when it is under 30%, the first 2 rows will turn off automatically.
    Extra for RGB Backlight Version:

    Add battery level showcase. Pressing Fn+B, if the power above 70%, the charging indicator is green; 30%~70 %, the charging indicator will be blue; when it is under 30%, the charging indicator will keep flashing.

     

    Download the Firmware V1.37 from the following link:

    Firmware V1.35 

    V1.35 has fixed issue that the backlight of Page Up does not flash with other keys. 

    Firmware V1.3

    What changes we have made compare to firmware V1.15?

    K2 RGB Backlight Version
    1. Added ‘Fn+ backlight key’ as a shortcut key to control the backlight on/ off.
    2. Under the ‘always-on’ mode, it shows white light by default.
    3. Added ‘Fn+ Left arrow’ and ‘Fn + Right arrow’ to adjust RGB backlight, as the schemes would not circulate before.
    4. Fix the issue that the battery indicator is still on after fully charged.
    K2 White Backlight Version:
    1. Added ‘Fn+ backlight key’ as a shortcut key to control the backlight on/ off.
    2. Fix the issue that the battery indicator is still on after fully charged.

     

    Download the Firmware V1.3 from the following link:

    Firmware V1.15

    What changes we have made for V1.15?

    1. This fixed the firmware bugs for the 2nd batch.
    2. In Mac/iOS mode, the Del key only activates when releasing the button. Works normally in Win/Android mode. 
    3. For any keyboard shortcuts, please press the Fn first and then press other keys to make it work. 

     

    Download the Firmware V1.15 from the following link: